# Questions Asked onMarch 27, 2011

1. ## scince

what are the disadvantages of non aqueous titrations

2. ## Chemistry

the type of reaction in a voltaic cell is best described as 1.spontaneous oxidation reaction only 2.nonspontaneous oxidation reaction only 3.spontaneous oxidation-reduction reaction 4.nonspontaneous oxidation-reduction reaction i know its spontaneous, but

3. ## Physics

A spring with k=40.0 N/m is at the base of a frictionless 30.0 degree inclined plane. A 0.50-kg object is pressed against the spring, compressing it 0.20m from its equilibrium position. The object is then released. If the object is not attatched to the

4. ## chemistry

Using the activity series, write a balanced chemical equation for the following reactions: 1. iron metal is added to a solution of copper (II) nitrate 2. zinc metal is added to a solution of magnesium sulfate 3. hydrobromic acid is added to tin metal 4.

5. ## chemistry

What chemical reaction is responsible for the endpoint observed when the NH3/NH4Cl buffer solution is titrated with HCl? Write a blanced ionic equation for the reaction.

11. ## accounting

P20-2A For the year ended December 31, 2010, the job cost sheets of DeVoe Company contained the following data. Job Number Explanation Direct Materials Direct Labor Manufacturing Overhead Total Costs 7640 Balance 1/1 $25,000$24,000 $28,800$77,800 Current

12. ## Algebra 2

PLEASE HELP-DUE APRIL 5TH, 2011!!!! EARTHQUAKES an earthquake rated at 3.5 on the Richter scale is felt by many people, and an earthquake rated at 4.5 may cause local damage. The Richter scale magnitude reading m is given by m = log (base 10) x, where x

13. ## AP Chem

What is the net ionic equation when NaOBr is dissolved in water and the Ksp if the Ksp of the dissocataion of HOBr is 6.4 * 10^-6

14. ## algebra

Write a function rule for the area of a triangle whose base is 4 ft more than the height. What is the area of the triangle when its height is 6 ft?

15. ## chemistry

A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 450 mL of a solution that has a concentration of Na+ ions of 0.700 M

16. ## physics

A uniform electric field of magnitude 320 V/m is directed in the negative y direction. The coordinates of point A are (-0.300, -0.450) m, and those of point B are (0.650, 0.300) m. Calculate the electric potential difference VB − VA. thanks

17. ## physics help

At a certain location, the solar power per unit area reaching the Earth's surface is 180 W/m2 averaged over a 24-hour day. Suppose you live in a solar powered house whose average power requirement is 3.2 kW. At what rate must solar energy reach your solar

18. ## chemistry

A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 500 mL of a solution that has a concentration of Na+ ions of 0.700 M

19. ## physics

A 650g ball on the end of a light rod is rotated in a horizontal circle of 1.2m radius.Calculate the torque needed to keep the ball rotating if the air resistance exerts a force of .02N on the ball. Ignore the moment of inertia and the air resistance of

20. ## Stoichiometry

if 3.5 mol TiCl4 reacts with 4.5 mol O2, which is the limiting reactant?

21. ## chemistry

This is from a "effect of pH on the solubility of Ca(OH)2" lab: If excess Ca(NO3)2 were present, what effect would it have on the solubility of Ca9OH)2? also, in a "effect of comlex ion formaiton on the solubility of NiCO3" lab": If HCl(aq) were added to

22. ## mechanics

A 60 Kg skier leaves the end of a ski-jump ramp with a velocity of 24m/s directed 25° above the horizontal. Suppose that as a result of air drag the skier returns to the ground with a speed of 22 m/s, landing 14m vertically below the end of the ramp. From

23. ## physics

A uniform electric field of magnitude 320 V/m is directed in the negative y direction. The coordinates of point A are (-0.300, -0.450) m, and those of point B are (0.650, 0.300) m. Calculate the electric potential difference VB − VA. thanks

24. ## physics

the polar-orbiting environmental satellites (POES) and some military satellites orbit at a much lower level in order to obtain more detailed information. POES complete an Earth orbit 14.1 times per day. What are the orbital speed and the altitude of POES?

25. ## marketing

47) When segmenting broad product-markets, cost considerations tend A. To lead to more aggregating. B. To lead to a large number of small, but very homogeneous, product-market segments. C. To be unimportant as long as the segmenting dimensions are

26. ## maths

If Sin2x=3sin2y then prove: 2tan(x-y)= tan(x+y)

27. ## trigonometry

Write the equation of the curve in its final position: the graph of y = tan (x) is shifted by (pi/6) units to the right, stretched by a factor of 3, then translated 8 units up.

28. ## chemistry

lab question: explain why different masses of precipitate were obtained for test tube IV and V?

29. ## Math

A population of 250 frogs increases at an annual rate of 22%. a. Write an exponential function to model the population of frogs. b. Find the population of frogs after 5 years.

30. ## calculus

An open box of maximum volume is to be made from a square piece of cardboard, 24 inches on each side, by cutting equal squares from the corners and turning up the sides to make the box. (a) Express the volume V of the box as a function of x, where x is

31. ## Human Relations

Which of the following steps will elicit a meaningful feedback from a passive person? A. confront the person. B. engage in a small talk to fill the uncomfortable empty pauses during a discussion. C. Set time limits. D. Ask close-ended questions. I think

32. ## physics

what should be the resistance of a heating coil which will be used to raise the temperature of 500 grams of water from 28 degrees celcius to 100 degrees celcius in 2 minutes, assuming that 25% of the heat is lost? the heater utilizes 110 volts.

33. ## mechanics

A 5 Kg marble is fired vertically upward using a spring gun. The spring must be compressed 8.0cm if the marble is to just reach a target 20m above the marble’s position on the compressed spring. a) What is the change ∆U in the gravitational potential

34. ## Physics

With what minimum speed must you toss a 130 g ball straight up to hit the 12 m-high roof of the gymnasium if you release the ball 1.3 m above the ground? I already figured out the minimum speed, 14m/s I'm confused on the next part With what speed does the

35. ## physics

An electron moving parallel to the x axis has an initial speed of 4.82 *10^6 m/s at the origin. Its speed is reduced to 1.46 * 10^5 m/s at the point x = 2.00 cm. Calculate the electric potential difference between the origin and that point.

58. ## Physics

Find the speed at which Superman (mass=88.0 kg) must fly into a train (mass = 17998 kg) traveling at 60.0 km/hr to stop it. Running into the train at that speed would severely damage both train and passengers. Calculate the minimum time Superman must take

59. ## Chemistry

I'm trying to calculate the enthalpy of the reaction Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2 (g) however I cannot find the enthalpy of the compound MgCl2 (aq) and I cannot calculate the total enthalpy without it

60. ## economics

Consider an economy with the production function L^(1/3) a) Derive the Labor demand Curve b) If Labor supply curve is L^s= (w/p), calculate the equilibrium levels of real wage, labor and output. c) Assume M^s= 45 and k=3 . What is the equation of the

61. ## Math

A population of 250 frogs increases at an annual rate of 22%. a. Write an exponential function to model the population of frogs.

62. ## chemistry

If you have 200.0 mL of a 30.0% aqueous solution of isopropyl alcohol, what volume of water is in the solution?

63. ## Physics

A motorist driving a 1200-kg car on level ground accelerates from 20.0 m/s to 30.0 m/s in a time of 5.0s. Neglecting friction and air resistance, determine the average mechanical power in watts the engine must supply during this time interval.

64. ## Chemistry

A chemist mixes 100ml of H2O at 30 degrees Celsius and 56.0g of CaOin a calorimeter. The following reaction occurs" CaO(s) +H2O(l)--->Ca(OH)2(s) ΔH= -16.0 kcal/mol The heat capacity Ca(OH)2(s) is 19.2 cal/mol*degreeCelsius and the heat of vaporization of

65. ## economics

What is the face value of a municipal bond that has a bond (or coupon) interest rate of 6% per year and makes interest payments of 578 dollars every 1 months?

66. ## math

Ben rolls a standard number cube (sides labeled with numbers 1 through 6). Find the probability that Ben rolls a number greater than 2 or an even number.

67. ## English

1. What do you not like doing? 2. What don't you like doing? 3. What do you hate doing? 4. What do you dislike doing? -I don't like doing computer games. (Which questions are commonly used? Are all grammatical?)

68. ## physics

an .18 kg is placed a compressed spring on the floor. the springs exerts an average force of 2.8N through a distance of .15m as it shoots the ball upward. how high will the ball travel above the release spring?

69. ## Chemistry

Calculate the pH after 0.10 mol of HCl is added to 1.00 L of the solution that is 0.57 M HF and 1.13 M KF. I got 3.01, but it is wrong. What did I do wrong?

70. ## physics

An electron moving parallel to the x axis has an initial speed of 4.82 *10^6 m/s at the origin. Its speed is reduced to 1.46 * 10^5 m/s at the point x = 2.00 cm. Calculate the electric potential difference between the origin and that point.

71. ## chemistry

A 20.1 mL sample of a weak monoprotic acid, HX, requires 50.0 mL of 0.060 M NaOH to reach the equivalence point. After the addition of 30.0 mL of NaOH, the pH is 4.90. What is the Ka of HX?

72. ## linguistics

Question Consider the following sentences: (a) River Song is an archaeologist from the future. (b) River Song has a screwdriver. Based on these two sentences, which of the following is true? A. (a) entails (b) B. (b) entails (a) C. (a) entails (b) and (b)

73. ## PreCalc

The sun rises at 6 AM and is directly overhead at noon, estimate the time (hour and minutes) when a 34-foot tree will have a 14-foot shadow.

74. ## english

Every now and then, instead of using e-mail, mail a letter to your grandparents. We live in a fast-paced world. We feel comfortable using computers to send e-mails and Instant Message. Nana doesn’t live in that time zone. Forget all those fancy fonts and

75. ## rebus puzzle

I need a good rebus sit to help sove some rebus puzzles. thanks!

76. ## Chemistry

At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g) SO3(g) + NO(g)\ If all four gases had initial concentrations of 0.550 M, calculate the equilibrium concentrations of the gases.

77. ## chemistry

The amount of 2.00 mol of a solid ionic compound was dissolved in 225 mL of water in an insulated container. The initial temp of water was 20 deg. C and the final temp. was 47.8 deg C. What is the delta heat Dissolution? Assume the heat absorbed by the

78. ## algebra

y^4-14y^3+49y^2 y^2(y^2-14y+49) y^2(y-7)^2 if you solve a problem like this ^ then how do you solve this: x^2-4x+4 ?????

79. ## Physics

A particle with a mass of 2.0×10−5 kg and a charge of +2.0 microC is released in a (parallel plate) uniform horizontal electric field of 13 N/C. If the plates are 5.6 cm on each side, how much charge is on each? (in pC) From what I have so far, the

80. ## Chemistry-102

What is the pH obtained by mixing 50.00mL of 0.100N HOAc (acetic acid) and 25.00mL of 0.200N NaOH?

81. ## CHEM-102

Calculate the pH of a solution prepared by mixing 10.00mL of 0.50M NaOH and 20.00mL of 0.50M benzoic acid solution. (Benzoic acid is monoprotic; its ionization constant is 6.7x10^-5).

82. ## physics

A proton is projected in the positive x direction into a region of uniform electric field E = (-6.80 * 10^5 N/C at t = 0. The proton travels 6.80 cm as it comes to rest. (a) Determine the acceleration of the proton. thanks

83. ## MAth

1/2ln(x+3)-lnx=0

I use spanishtypeit to do accents so I just said after phrase where I would have put the accent mark-thank you for checking 1.¿Cuál es tu deporte favorito? Mi deporte favorito es al golf. 2..¿Te gusta navegar en el internet? Si, me gusta navegar en el

85. ## physics

A hunk of cast concrete with a weight of 10 N will float if it displaces 10 N of water.

86. ## algebra

Dertermine whether ech binomial is the difference of two squares, If so, factor it, if not explain why? -m^6 36s^2-4t^2 9b^4-200 x^2-16 x^2y^2+196

87. ## math

Find an equation of a polynomial function of degree 5 with integer coefficients with zeros 0, -2, and 1/2.

88. ## Composition (Intro Paragraph)

I would like to get a little feedback. I had to write an introduction paragraph of at least 250 words that includes a thesis sentence stating how and why the specific work is more than just a piece of entertainment. The thesis must relate why it is a

89. ## Geometry

I need to get the largest area of 100 feet of rope. I want to say rectangle: 40L x 40L x 10w x 10w =100 Please advise if I am on the right track. Keeping in mind that you can use any Plan Geometry Shape?

90. ## math-- algebra

If a pro basketball player has a vertical leap of about 25 inches, what is his hang time? Use the hang-time function V=48T^ I am having major problems here!!! I need help.

91. ## Physics

A radioactive nucleus is at rest when it spontaneously decays by emitting an electron and neutrino (as shown in the figure below ). The momentum of the electron is 8.11 x 10−19 kg·m/s and it is directed at right angles to that of the neutrino. The

92. ## Math

A 30-m tall flag pole and its shadow form the sides of a right triangle. On this particular day, the sun rises at 6 AM and sets at 6 PM. At what time of the morning (to the nearest minute) will the length of the shadow be exactly 40 m? (Hint: determine the

93. ## biology

Sex is not always a fixed characteristic of an organism. There are a variety of sex switching organisms as well as hermaphrodites who act as either male or female depending on the circumstances. How can we understand the behavior surrounding these

94. ## physics

The density of a solid ball with a mass of 231 g and a volume of 110 cm^3 is ____ g/cm^3.

95. ## Calculus.

Given the function f with the restricted domain, find the points at which the tangent line is horizontal. f(x)=2sec(x)-tan(x) Domain: [-pi/2,pi/2] * I got (pi/6, square root of 3), but I am not sure if that is right, or if there is another point.

96. ## Physics

An inexperienced catcher catches a 128 km/h fastball of mass 134 g within 1.01 ms, whereas an experienced catcher slightly retracts his hand during the catch, extending the stopping time to 10.1 ms. What is the average force imparted to the two gloved

97. ## math

An executive committee of three is selected from a group of ten. Which expression best describes the number of combinations? These are my choices. I have to have one of these as the answer. I am stuck. My answer was B. 10!, but I am still not sure. Can

98. ## Math

ln(x+3) + ln(x+4) = 3ln2

99. ## center of mass

3 point mass of 4g placed at x=1,3,-6. where should a point fourth mass of 4 gm be placed to make the center of the mass at the orgin? this what i got : -24+4+12+4x/16=-8+4x/16. this what i did but i didn't get the right answer(which is 2) can someone tell

100. ## chemistry

Substance x has a molar mass of 107.6 g/mol. when 2.50 g of substance x burns in an iron calorimeter the temp. of calorimeter and water (2.000Kg)increases from 25.8 d Celsius to 38.7 d celsius. What is the molar heat of combustion of substance x in kJ/mol.

101. ## math

Stanwood Builders has a development of new homes. There are five different floor plans, four exterior colors, and an option of either two-car or three-car garage. How many choices are possible for one home? A. 60 B. 40 C. 20

102. ## math

If the cost of a cell phone has decreased 400% during the past 10 years, does that correspond to a decrease of four times?

103. ## math trivia

larry has 3 children. the product of their ages is 36 and the sum of their ages wont help you. the youngest is blonde. how old are the children? this is a "fun" math activity? help!! :)

104. ## rebus puzzle

What do the letters LIF mean They are written large and I need to solve for a rebus puzzle?

105. ## Math

A company contributes $170 per month into a retirement fund paying 4.20% compounded monthly and employees are permitted to invest up to$ 2,800 per year into another retirement fund which pays 4.20% compounded annually. How large can the combined

106. ## math-combinations

An executive committee of three is selected from a group of ten. Which expression best describes the number of combinations? A. 10P3 (small 10 and 3) B. 10! C. 3P10 (small 3 and 10) D. 10P3/3! (small 10 and 3 on top, big 3! on the bottom)

107. ## REBUS PUZZLES

I need help with some rebus puzzles please. T H R O U G H The letters TRUH are in Bold color. E OV RRAT D E

108. ## physics

A proton moves at 3.60 *10^5 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 8.20* 10^3 N/C. Find the time interval required for the proton to travel 4.00 cm horizontally. thanks

109. ## eth 125 week 1

Select one of the following subordinate groups from Ch. 1 of the text, or, because the chapter does not list all subordinate groups, you may select any other group that has a documented history in the United States. Do not select your own ethnic group! o

The conceptual framework developed by the Financial Accounting Standards Board

111. ## Physics

A radioactive nucleus is at rest when it spontaneously decays by emitting an electron and neutrino (as shown in the figure below ). The momentum of the electron is 8.11 x 10−19 kg·m/s and it is directed at right angles to that of the neutrino. The

112. ## Physics

A sled of mass 5.98 kg is coasting along on a frictionless ice-covered lake at a constant speed of 1.42 m/s. A 1.98-kg book is dropped vertically onto the sled. At what speed does the sled move once the book is on it?

113. ## Algebra 2

PLEASE HELP WITH THIS-ITS DUE APRIL 5TH, 2011!!! During a past epidemic, the number of infected people increased exponentially with time, or f (t) = ab^t , where f is the number of infected people at time t, in days. Suppose that at the onset of the

114. ## physics

A bar made of a particular metallic alloy has a length of 10 cm at a temperature of 24 oC and a length of 10.015 cm at the boiling point of water. (a) If a second bar made of the same material were 10 m at 24 oC, how much longer would this bar be at the

Experienced superhighway drivers know the importance of staying behind or ahead of what some people call wolf packs –- several fast-moving vehicles bunched together. Wolf-packing can be the cause of high-speed fatalities. This passage was probably

116. ## physics

The terminal velocity of a 4×10−5 {\rm kg} raindrop is about 9 {\rm m/s}. Assuming a drag force F_{\rm{D}} = - bv, Assuming a drag force determine the value of the constant b.

117. ## Chemistry

The calcium in a 150 mL sample of water from the Ogeechee River at a location near Savannah was determined by precipitating Ca2+ as CaC2O4.H2O (FW=146.115 g/mol). The precipitate was collected by filtration, washed and then ignited [turning the CaC2O4.H2O

181. ## Physics

A closed organ pipe 0.8 m long has a diameter of 7.0 cm. The air in the church is 15oC. What is the fundamental frequency? If the heat is turned up to 20oC, what is the new fundamental frequency?

182. ## Math

lnx+ln(x+3)=2

183. ## Math

A normal cake is divided into the maximum number of pieces, p, by c slices. When c = 1, 2, 3, 4, 5, and 6, the cake is divided into 2, 4, 8, 15, 26, and 42 slices respectively. What is the maximum number of pieces into which the cake can be divided when it

184. ## physics

A proton moves at 3.60 *10^5 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 8.20* 10^3 N/C. Find the time interval required for the proton to travel 4.00 cm horizontally. thanks

185. ## chem

im studying for a test and i have no idea where to even start for this practice problem..?? a 0.15M(molarity im assuming)solution of BrCl2 contains.. a).15MBr2+ ions and .30M Cl- ions b).30MBr2+ ions and .15M Cl- ions c).15MBr2+ ions and .15M Cl- ions

186. ## Physics

A tennis ball of mass 0.0609 kg is served. It strikes the ground with a velocity of 52.5 m/s (117 mi/h) at an angle of 22.0° below the horizontal. Just after the bounce it is moving at 50.5 m/s at an angle of 17.7° above the horizontal. If the

187. ## Trigonometry

A rectangular box shown has dimensions 10" multiplied by 6" multiplied by 4" (a = 10, b = 6, c = 4). Approximate the angle theta formed by a diagonal of the base and a diagonal of the 6" multiplied by 4" side. (Give the answer to two decimal places.)

188. ## english

Janet left fingerprints on the glass, the detectives were able to solve the crime

189. ## MAth Im stuck on question can anyone help me ?

Im stuck on this question can anyone help me ? I thought it was b but that's wrong Which situation can be modeled by tossing a coin 3 times A)choosing which one of sixteen teams will win a tournament? B)picking one of six math teacher, C)decide which

190. ## Social

Hi, I have to draw a cartoon 3-4 slides about capitalism and put like air bubbles with people talking. I was wondering if you have any ideas what the conversation could be about?

191. ## calculas

caluclas (intersection of three planes) HELP!!!? in the equations k is a real number 1.x-2y+z=4 2.x-y-z=3 3.x+y+kz=1 for what values of k does the system 1.have exactly one solution? 2.have an in finite number of solution?

192. ## physic

How long will a radio wave, with a wave length of 200 m takes to travel to and for the moon from the earth? (Distance of moon from earth = 3.9 x 108 m)

193. ## Physics

the weight of an object changed by =25.0% the object's final weight was 2.5 grams. What is it's inital weight

An executive committee of three is selected from a group of ten. Which expression best describes the number of combinations? These are my choices. I have to have one of these as the answer. I am stuck. My answer was B. 10!, but I am still not sure. Can

2x+7=4x+3 ? 3x+6=5x+1 ? 2n+6=8N+3 ? 6N+9=9n+6 ?

There are 6 people in a gardening club. Each gardener orders seeds from a list of 11 different types of available seeds. What is the probability that at least 2 gardeners order the same type of seeds?

197. ## History

Were Athen boys forced to serve in the army?

198. ## chemistry

What is the percent yield of the mass of water that will be produced when 5.0 grams of H2 is reacted with excess O2 if 40. g of water are actually recovered?

what is an equation?

200. ## biology

In a species, there are usually equal numbers of males and females and occasionally not. Furthermore, parents bias investment to male or female offspring. Discuss the relation of these phenomena.

201. ## Math

In a science fair experiment, 2 units are selected for testing from every 500 units produced. How many ways can these 2 units be selected?

202. ## MATH

What tool do i use to find the measurement of the classroom floor.

203. ## science

what might happen to pastry dough that doesn't include enough water?

204. ## english

what does this quote mean "We'll have to tighten the belt a little bit and make due"

205. ## English

I included the five sentences I was most unsure of. Thank you for helping me. It's really urgent. 1) I was very proud of myself when I won a (the) regional roller-skating competition in 1998. (when I scored 4 goals one after the other/when I headed the

206. ## Public Finance

The cost of hiring a secuirty guard to patrol the neighborhood of a community is 300 per week Assuming that the marginal benefit of the first secuirty guard is 100 for each of the ten (n=10) individuals living in the community what is the optimal outcome

207. ## computer sciece

The change in memory density with time can be described by B=19.97*10^10.1977(year 1960).If a straight line projection is mode using this equation, what will be the number of memory chips/bits in the year 2020?

208. ## computer/internet

LTE vs 3G and HSPA?

209. ## physics

Muons are elementary particles that have a very short lifetime of about two millionth of a second (when at rest). They can be created in the upper atmosphere (at an altitude of say 10,000 meters) by cosmic rays, in which case they travel towards the

211. ## math

simplify and state the restrictions of a^2- 9b^2 / 5a^2-11ab-12b^2

212. ## Math

Just for reference √ = square root Evaluate the following expressions: a) 3√12 - 7√75 b) 1 3/5 + 4/-15 c) -3 + (-5) +3 (-5) d) 3y+6/4 - y-3/2 = 3y/4

213. ## chemistry

when copper sulphide is heated a new product is form in white colour plz explain me the whole process..

214. ## algebra

the perimeter of a rectangle is 82m. the length is 2m ore then twice the width. what is the dimensions?.

asked by bianca, pleeease help i'm lost
215. ## chemistry

why must a clean rod be used each time?

217. ## math

you have a $5841 credit card debt, and you plan to pay it off through monthly payments of$71. if you are being charged 14% interest per year, how long will it take you to repay your debt?

218. ## social studies

The knights role and fall of feudalism

219. ## Chemistry

Calculate the pH after 0.13 mol of NaOH is added to 1.00 L of the solution that is 0.57 M HF and 1.13 M KF. I got the answer of 3.66 to 3 sig figs, but it's wrong. Can you please tell me what I did wrong? -Thanks

220. ## Geometry :(

What is the equation for a line that passes through the points (-3,-3) and (6,15)??? A: y=-2x+9 B:y=-2x-3 C:y=-2x+3 D:y=-2x-9 Please please help and thanks :)

(3/4) (1/-2) + (5/6) (-1/3)

222. ## algebra

how to: graph , substitution, and elimination y=2x+5 y=2x-8

223. ## algebra

convert to decimal 8.93x10^7

5ã-1/1024

225. ## Linguistics

1) (A) Mary murdered the platypus (B) Mary killed something Is the answer: (a) entails (b) OR (a) presupposes (b) OR both 2) (A) John is taller than Mary (B) Mary is shorter than John Is the answer: (a) entails (b) OR (a) presupposes (b) OR both

226. ## current events

I;ve been looking around for a long time on the internet and i cannot find cureent republicans view on k-12 education and how they differ from democrats. someone please help. thankyou/

227. ## math

The number of pages in tony's book is the quotient of the number of pages in Monique's book and four, increased by one. if m repesents the number of pages in Monique's book, write an algebraic expression for the number of pages in tony's book

228. ## math

the number of puppies is 3 more than twice the number of kittens in the canal. if there are k kitten in the canal write an algebra expression for the # of puppies in the canal

229. ## English

Thank you very much. I forgot to include the following sentences. 1) Refer to situations in which robotic planes have proved to be useful. 2) Which scientific methods does forensic science adopt to catch potential criminals? 3) What/Which skills are

230. ## Biology- GI Tract

I have a question regarding the gastric wall. Do the epithelial cells of the mucosa secrete substances directly into the lumen or do they secrete into the gastric pits then then from there the substances go into the lumen?

231. ## math

pivot the system about the element in row 2, column 1: -5 5 l -7 10 4 l 4

232. ## math

(x/4−1/x)/(1/2x+1/4)

233. ## Pre-Calc

300=5000^e*.3x

234. ## Calculator help

can someone tell me how to graph this equation on my graphing calculator: 300(2+sin(4sqrt x+0.15)) for 0

235. ## chemistry

there are __ reprensentative particles in a mole of any substance

236. ## psy202

contrast 2 theories or perspectives from late stage adult development?

237. ## psy202

identify how each approach informs or impacts your life,particularly as you prepare for your senior years?

238. ## algebra

help solve x^+18-4=0

239. ## math 117

a^-5a-36=0 can anyone help me on this??

240. ## french

on regarde le match? -------------------- on marche sur la corniche? ------------------------ on parten voiture? ---------------- on va aila tour du caire? ---------------------- je fais une excursion au fayoum? -------------------------------- nous

241. ## Math

How do you know how many units are spread between the intervals? (For instance, 120-129, 130-139, units spread by 10) How would we answer this question? Thirty AA batteries were tested to determine how long they would last. The results, to the nearest

242. ## math

how many different ways can you pick 2 objects from a set of 7 objects?

243. ## Science

8 points how the gravitational acceleration(g) is used to benefit mankind and the enviroment

244. ## Biology - GI Tract

I have a question about Vit B12. Where is it absorbed in the body? In lecture, the professor stated once that it's absorbed in the small intestine and then later stated it was the large intestine. I'm thinking small intestine makes more sense but I'd like

245. ## algebra 2

how do i graph: y(less than or equal to)-6ãx

246. ## math

What is the union of x and y? X. (3,6,9) Y. (5,10,15)

247. ## math

Consider the polynomial x^3 + 6x^2 + 3x - 10. Without dividing, or graphing, which two of (x+2), (x-2), (x+1), and (x-1) must be factors of the polynomial? Why/how do you know?

248. ## human services

What are some possible obstacles that are preventing resolution of unmet needs of those with disabilities?

249. ## Math

how will u write 27th March 2011 in 5letters without using numbers.

250. ## physics

what will happen if we suspend a brick with a newton metre in water

251. ## Math ( calculas)

find the intervals on which the curve y=x/(x+1)^2 is concave upward or concave downward.

252. ## Math

how do i solve 2q/(2q+3)-2q/(2q-3)=1

253. ## Math 117

subtract and simplify if possible 4-z - 8z-5 = z-2 2-z not sure if i got this typed right thank you for anyhelp you may give

254. ## psy202

discuss the benefits(pros) and short comes (cons) of each perspectives?

255. ## math

solve in factored form 3x^8 - 27x^7 + 21x^6

256. ## Geometry :]

What is the equation for a line that passes through the points (2,1) and (-4,4) A: y=-1/2x+2 b: y=1/2x+2 c: y=-1/2x-2 d: y=1/2x-2

257. ## Calculus.

What is the derivative of [(3t+4)/(6t-7)]^3?